Die-casting apparatus.



Patented Apr. 8,1919.

2 SHEETS-SHEET I J. KRALUND.

DIE CASTING APPARATUS. APPLICATION FILED JULY 17. 1918.

Patented Apr. 8,1919. 2 SHEETSSHEET 2 ll 'fl-lll lN NTOR ATTORNEY useof,

State of New York,

- the mechanism for "supplyin from a melting pot to a suite Jenn norms rTo all whom it may concern:

Be itlmown that 1, Joan KRALUND, a citizen of. the United States,residing in the borough otBrooklyn, county of Kings, and have inventedcertain new and useful Improvements in Die-Casting Apparatus, oft-whichthe following is a specification. a f v I My invention relates to diecasting app aratus and particularly to improvements in molten metal ledie or mold by air pressure. By my invention, a swinging or otherwisemovable member, which may be termed a carrier or a ladle, is made thisdevice dipping into the molten metal in the melting pot, so that acharge of the same runs. into its interior after which the carrier ismoved to .cause' its mouth to aline accurately-with the gateor openingof the die. as soon as this IS accomplished,

compressed air .is forced through the carrier to deliver thechargeof-metalintothe die. By mechanism of this character, the char e isforced into the die accurately and e ciently, while at the same timeonly the metal in the swinging carrier device is exnism for the posed tothe air pressure, so that the'oxidation of the main body of metal in themelting, pot by the use of the air pressure is prevented.

My invention provides improved mecha-v operation of devices of thischaracter for the purpose of insuring accuracy and certainty ofoperation as'wellas simplicity of construction and speed in operation.My improved mechanism is so mounted as to cause the inouth of thecarrier device to first be submerged inthe molten metal in the meltingpot to take a charge, after which the carrier device moves to lift themouth thereof out of the metaland,

" above the melting pot, the mouth-piece be- 1 I ing rejected into t ofold ing of the'die member,

e die which in: form, or noorrivn, new renal, nssrenoa "ro IDQEELER DIEens .1 cone, or nnoonmzn', new rear,

Specification of Letters Eatent.

zhpplieation filed. July 17, 1918. Serial No. 2%,263:

swinging carrier or a a hollow interior,

such as that shown,

engagement with the gate Y is mounted immediately .above the edge of themelting pot. lhe car rier device is so mounted as to accurately withinthe molten metal inposition topermit the locked in this enthedie; My"

various improved, including the use arcs Patented Apr. d, 1919.

of removable mouth-pieces for the carrier device, which may be readilyreplaced and secured in position, and the use of a movable device forbreaking the "bond between the mouth-piece of theocarrier and the gatemember with which it' engages, whenever any such bond tends to form, orto permit the removal of the gate member for cleaning.

In order that a clearer understanding of my invention may be had,attention is here by directed to the accompanying drawings forming partvof this application and illustrating a preferredembodiment of myinvention; In the drawings, Figure 1 represents a side elevation ofcasting apparatus embodying my invention, certain parts being shown insection; and larged'side elevationof the melting pot and adjacent parts,certain-parts being shown in section, y

In the construction shown in the drawings,the melting pot 1 is adaptedto contain-the main body shown) in the heating chamber 2. The ladle 3 isshown in 2 the full line position, is adapted to deliver ,a charge ofmolten metal into the die.

Fig

of the carrier in which the charge is taken into-the same' The carrieris provided with comprising a central bore 4, terminating at the forwardend in a mouth 5 in which the removable mouthpiece'6 may be fitted, thismouth-piece having atapering passagewa 7 therethrough alined:with thebore of t e carrier device.

Thecarrier may be of -ainy suitable shape,

rear as by the closure 8, through'which extends a flexible pipeconnection 9 for the introduction. of compressed air.

Fig. 2 is an en-- of molten metal and is heated b any usual heatingmeans (not is closed at the in which it I This figure also indi- 'cates1n dotted lines the opposite position -'.lhe'carrier is supported bymeans enabling the mouth-piece in the container 1 molten metal to thesame. The'supporting readily flow into means are also designed to raisethe mouthabove the meltingpot or conpiece entirely minor 1 and the potinto alin'ement with the gate member of the die which may be locatedimmediately above the proyect the same laterally 0t 6-to be submergededge of the melting pot.

. rearwardly extending bracket 17.

' one of which is pivotally gether with from the forward portion ofcourse, be understood This may be accomplished by provisions forsupporting the carrier device, to-

other provisions for moving the device bodily across the melting potinto position to aline the mouth of. the carrier device with the dieopening.

In the preferred embodiment of my construction as'illustrated, the mouthor forward end of the carrier device is sup orted y a pair of swingingarms, one of which is illustrated at 10. Only one of these arms isshown, theconstruction being the same on both sides of the device. Thearm shown is pivotally mounted at its lower end on a horizontal pin-11carried by a bracket 12 which extends upwardly from, the upper edge ofone of the side frame members .13 of the cured. An arm similar to thearm 10 may be similarly mounted on the opposite side of the apparatus.10 are connected bya horizontal which is rotatably mounted in the boss15, on a web 16 extending upwardly of the carrier depins 14 may be used,rotatably mounted in parallel webs 16. arms 10 areadapted to swing fromtheir lower rearwardly inclined position, in which the mouth piece 6 issubmerged within the molten metal, Fig. 2, to the forward position, inwhich arms 10 stand substantiallyvertically above their pivots 11 inwhich the mouth-piece 6 is raised above the edge of the melting pot.

In the construction shown in the drawings, the carrier device 3 isprovided with a A pair of arms, one of which is shown at 18, arepivotally mounted at their upper ends on pins, shown at 19, carried byapa1r of upwardly extending brackets or pedestals rising from theopposite side frame members 13 of the apparatus, one of these bracketsbeing-shown at 20. Arms 18 carry at their lower ends a rod 21, which isjournaled in the lug 17 of the carrier device 3, arms 18 being adaptedto swing from the dotted line position, in which the mouthpiece 6 issubmerged, to the full line position shown piece is raised and above theedge of the ormed vice 3, or 'alined projected forwardly melting pot. Itwill, that either one or two of the arms 10 and 18 may be used asdesired, and one or two of the lugs 17 and rods or pins 21.

My invention also preferably includes mechanism for forcing themouth-piece 6 positively into engagement with the gate opening of thedie with a desired pressure and holding it in such position positivelywhile the charge is being forced into the die. This may effectively beprovided by the tog- The upper ends of the arms pin 14,

The

as is shown in dotted lines inin Fig. 2 in which the mouth-' gleconstruction shown in the drawings, in

is pivotally mounted on the which the arm 22 shaft 23 carried structure.

secured to the pin 21 mounted in lug .17 of the carrier device 3. Thearm 22 is provided with a flange 27 extending above arm 25, a set, screw28 extending through flange .27 into contact with the upper surface ofarm 25,- this set screw constituting a stop for determining the positionof the carrier device in which the charge is to be forced into the diemember. It will, of course, be understood that the arms 22 and 25 may beand preferably are duplicated, one complete toggle being used oneachside ofthe machine in connection with one of the arms 18.

' The die member may be positioned relative to the melting pot andseparated therefrom to remove the finished casting at each operation byany desired means. In the device illustrated in the drawings, a framerepresented generally by the reference character 29 is mounted on astandard or standards 30 which may be moved along tracks 31 intoadjusted position and there 29 is provided with forwardly extending rods32, to the forward end of which is secured. the gate member 33 which hasa horizontal opening extending therethrough provided with a removablebushing or gate former 34. The end of this bushing extends somewhatbeyond the member 33 and is provided with a tapered mouth, as shown at35, with which the tapered mouthrpiece 6 is adapted to engage. The frame29 may be adjusted into position until the member 33 engages theupwardly extending portions 36 of the brackets 12.

The frame 29 is provided with an upwardly extending portion or portions37, in which is rotatably mounted the shaft 38, carrying a pinion 39 androtated by means of the hand wheel 40. Rotation of the hand wheelreciprocates the rack 41 which operates the ram member 43, to which oneportion of the die may be secured. Preferably the connection foroperating ram member 43 comprises links 42, 42, which are pivotallyconnected at their inner ends to rack 41, and at their outer ends to thepivotal connections between links 42 and 42", links 42 being pivoted attheir forward ends to ram member 43, and links 42 being pivoted at theirrear-ends to frame 29. Links 42 and 42' act as toggles, as shown, tolock ram member 43 in the forward position shown in which the die isclosed. I do not claim secured. Frame the track or this mechanismherein, a similar mechanism replacement.

, been mounted within the lugs 44, this partial rotation locking themouth-piece because of the wedging engagement of the inclined surfacesindicated on lugs 45 within their in lugs 4d. The bushing 34; shouldalso be replaceable and may be mounted in position in member 33 with asliding fit. The object of making the mouth-pieceand bushing 3 1removable is to enable the same to be re laced or cleaned when they havebeen su ciently worn away or coated by the action of the. molten metalthereon. The mouthieoeand bushing are formed oi suitable me :1,

- A lever a6 is preferably mounted upon the,

mouth portion 35 of bushing 34' to rotate therewith, the lever beingprovided with a sleeve portion 47 fixedly seated on the bushing. Thislever may be oscillated in a vertical plane about the of whenever thereis any tendency for the molten metal to form a piece 6 and the mouth 35of bushing 34, this oscillation of the lever edectively' breaking suchbond. A splash guard 48 may be mounted over the forward end of carrier 3to prevent the splashing of molten metal.

lit will lee-noted that the pressure with which mouth-piece 6 is forcedagainst its seat 35. is regulated by adjusting the set screw 28 and thatthe mouth-piece is held positively and-in proper alinement with themouth 35 of bushing 34, while the charge of molten metal in the bore 4:of carrier device 3 is forced by the compressed air into-the die. Thelever 46' may, ifdesired, be used as a handle for the easy removal ofthe gate former or bushing 34- whenever it is desired to clean thelatter, and a clip or latch 46 may be mounted on member 33, to removablyextend about and hold lever 16, to prevent the gate former being pulledout by adhesion to mouth-piece 6;

What I claim is 1. In casting apparatus, the combination of a moltenmetal container, a carrier device having a hollow interior and a mouthcommunicating therewith, supporti connec- -ti0ns pivotally secured tothe forward and rear portions of said carrierdevlce, arranged to bemoved to cause said mouth to be sub. merged within the molten metal insaid container, at one limit of movement, and to jecte'd over the top ofother limit of movement, and connectionsfor carrying compressed air intothe mouth thereof into a die. 1

the combination of a molten metal container,

in position bushing 34c bond between mouthcause said mouth to be raisedabove prosaid container, at the rier device, to discharge molten metalfrom 2. In casting apparatus,

a carrier device having a hollow interior, a mouth at the forward endand a compressed air connection at the rear, a swinging arm pivotallysecured to said container at one end and to said carthe forward portionof said carrier device at the other end, positioned to support saidmouth within the container in o e position and above and beyond thecontainer in another position, and swing supportingmeans pivotallysecured to the rear portion of the carrier device 3. In castingapparatus, the combination of a molten metal container a carrier devicehaving a hollow interior, a mouth at the forward endand a compressed airconnection at the-rear, and meansfor supporting said device, andswinging and moving the same bodily laterally of the container, suchthat said mouth will be submerged within the molten metal in thecontainer in one position, and will be projected horizontally above theedge oi said container in another position for registration with a dieopening.

a. 1n casting apparatus, the combination of a molten metal container, acarrier device having a hollow interior, a mouth at the forward end anda compressed air connection at the rear, said device havinga web portionextending vertically above its forward end, an arm pivoted at its lowerend to said container and atits upper end to the forward part of saidweb portion, said arm being adapted to swing in which said mouth isabove the edge of the container to a' lower rearwardly extendingposition in which'said mouth is its the container, and means supportingthe rear portion of said device from the container, adapted to move saiddevice and back in a plane parallel to that in which said arm swings.

5. 1n casting apparatus, the combination of a molten metal container, acarrier device having a hollow interior, Ward end and a compressed airconnection at there ar, an arm pivotally connected to a fixed point andto said device for supporting the same and raising and lowering saidmouth out of and into the molten metal in said container, and an armsecured to a different point on said device for supporting the same andmoving it forward and back as said first arm raises and lowers saidmouth.

6.1 1 casting apparatus,'the combination of a molten metal container, acarrier device having a hollow interior, a mouth at its forward end anda compressed air conneca mouth at its forforward of a molten metalcontainer, a carrier devicevhaving a hollow interior, a mouth at itsforward end and a compressed air connection at the rear, said device,means for moving it forward and back and looking it in forward position,said mouth being adapted toidip into said container as it moves back,and means for raising said mouth and alining it with a desired point assaid device moves forward.

8. In casting apparatus, the combination of a. molten metal container, acarrier device having a hollow interior, a mouth at its forward end anda compressed air connection at the rear, means for supporting saiddevice, means for moving it forward and back and looking it in forwardposition,

comprising a toggle, and'means for raising said mouth from a pointwithin said container, assaid device moves forward, into position toaline with a die opening.

9. In casting apparatus, the combination means for supporting of amolten metal container, a carrier devicehaving a hollow interior, amouth at its forward end and a compressed air connection at the rear, atapering mouthpiece removably secured in said mouth, a gate memberhaving a horizontal opening therethrough above said COIlt&11181, andmeans for supporting and moving said device to cause said same, towardsaid carrier evice, a lever having a bos fixedly seated on the extendedportion of said bushing, and means for supporting and moving said deviceto. carry said mouth from the interior of said container into the end ofsaid bushing and vice versa.

This specification signed and witnesmd this 9th day of July,

1918. JOHN KRALUND.

Witnesses HENRY Somonnm. EDMUND Josurrr WARD.

beyond the

